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Today's Topics:
1. Re: DHCP option host-name matching (Bradford Dickerson)
2. Re: DHCP leasequery reply for clients with fixed-address
(Simon Hobson)
3. Re: dhcpd peer constantly requesting rebalancing (Simon Hobson)
4. Re: [Ext] Re: DHCP option host-name matching (Jim Glassford)
----------------------------------------------------------------------
Message: 1
Date: Tue, 15 Mar 2016 21:00:56 -0400
From: Bradford Dickerson <[email protected]>
To: Users of ISC DHCP <[email protected]>
Subject: Re: DHCP option host-name matching
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
Yes would miss that one. In our particular case though it is ok since we are
just trying to roughly characterize the traffic and don't think most of our
users change there iPhone name but could be wrong.
Sent from my iPhone
> On Mar 15, 2016, at 5:07 PM, Jos? Queiroz <[email protected]> wrote:
>
> What if Stephan changes its iphone's name to "MadMakingMachine"?
>
>
>
> 2016-03-14 10:43 GMT-03:00 Bradford Dickerson <[email protected]>:
>> Thanks Glenn! I didnt see that option when looking at man pages first time
>> through but now I do!. Thx, Brad
>> > On Mar 13, 2016, at 10:24 PM, Glenn Satchell <[email protected]>
>> > wrote:
>> >
>> > Regex matching has been a part of the syntax for many years. See dhcp-eval
>> > man page on your system.
>> >
>> > data-expression-1 ~= data-expression-2 data-expression-1 ~~
>> > data-expression-2
>> >
>> > The ~= and ~~ operators (not available on all systems)
>> > perform extended regex(7) matching of the values of two
>> > data expressions, returning true if data-expression-1
>> > matches against the regular expression evaluated by data-
>> > expression-2, or false if it does not match or encounters
>> > some error. If either the left-hand side or the right-
>> > hand side are null or empty strings, the result is also
>> > false. The ~~ operator differs from the ~= operator in
>> > that it is case-insensitive.
>> >
>> > So you'll want something like this, but it's not foolproof either as the
>> > user could name the system anything they like.
>> >
>> > class "IPHONE_ACCORDING_TO_HOSTNAME" {
>> > match if option host-name ~= "iPhone";
>> > }
>> >
>> > regards,
>> > -glenn
>> >
>> > On Sat, March 12, 2016 9:06 am, Bradford Dickerson wrote:
>> >> Thanks Jose for pointer to list. I could use that to identify Apple
>> >> clients. To narrow it down to various apple types such as iphones, ipads
>> >> vs mac computers dont think it will help.
>> >>
>> >>> On Mar 11, 2016, at 4:44 PM, Jos?? Queiroz <[email protected]> wrote:
>> >>>
>> >>> Have you seen this?
>> >>> https://code.wireshark.org/review/gitweb?p=wireshark.git;a=blob_plain;f=manuf
>> >>> <https://code.wireshark.org/review/gitweb?p=wireshark.git;a=blob_plain;f=manuf>
>> >>>
>> >>> PS: Sorry the [possible] double posting, for some reason my messages
>> >>> aren't being received by the list.
>> >>>
>> >>> 2016-03-11 18:09 GMT-03:00 Bradford Dickerson <[email protected]
>> >>> <mailto:[email protected]>>:
>> >>> Hi Jose,
>> >>> Thanks for replying. Was looking into that but was unsuccessful (
>> >>> searching on the web ) finding a list(range) of OUIs that Apple used
>> >>> specifically for their iphones. Thx, Brad
>> >>>
>> >>>> On Mar 11, 2016, at 3:43 PM, Jos?? Queiroz <[email protected]
>> >>>> <mailto:[email protected]>> wrote:
>> >>>>
>> >>>> Hi Bradford,
>> >>>>
>> >>>> It will be much easier if you use MAC Addresses to do that. That way
>> >>>> you may use the MAC's OUI to determine the device's branding.
>> >>>>
>> >>>> 2016-03-11 17:35 GMT-03:00 Bradford Dickerson <[email protected]
>> >>>> <mailto:[email protected]>>:
>> >>>> Hi,
>> >>>> At our company, we are trying to hand out IP ranges based on the
>> >>>> characteristics of the client. For example using a class declaration
>> >>>> as follows:
>> >>>>
>> >>>> class "IPHONE_ACCORDING_TO_HOSTNAME" {
>> >>>> match if substring(option host-name,0,6) = "iPhone";
>> >>>> }
>> >>>>
>> >>>> but I notice many iphones have names like ???Brad-iPhone??? or
>> >>>> ???TomIphone??? does not quite match above . Is there any plan to
>> >>>> support regex type matches?
>> >>>>
>> >>>> Thx,
>> >>>> Brad
>> >>>> _______________________________________________
>> >>>> dhcp-users mailing list
>> >>>> [email protected] <mailto:[email protected]>
>> >>>> https://lists.isc.org/mailman/listinfo/dhcp-users
>> >>>> <https://lists.isc.org/mailman/listinfo/dhcp-users>
>> >>>
>> >>>
>> >>
>> >> _______________________________________________
>> >> dhcp-users mailing list
>> >> [email protected]
>> >> https://lists.isc.org/mailman/listinfo/dhcp-users
>> >
>> >
>> > _______________________________________________
>> > dhcp-users mailing list
>> > [email protected]
>> > https://lists.isc.org/mailman/listinfo/dhcp-users
>>
>> _______________________________________________
>> dhcp-users mailing list
>> [email protected]
>> https://lists.isc.org/mailman/listinfo/dhcp-users
>
> _______________________________________________
> dhcp-users mailing list
> [email protected]
> https://lists.isc.org/mailman/listinfo/dhcp-users
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------------------------------
Message: 2
Date: Wed, 16 Mar 2016 10:08:13 +0000
From: Simon Hobson <[email protected]>
To: Users of ISC DHCP <[email protected]>
Subject: Re: DHCP leasequery reply for clients with fixed-address
Message-ID: <[email protected]>
Content-Type: text/plain; charset=us-ascii
Kristian Pedersen <[email protected]> wrote:
> All our hosts are added as hosts with fixed-address using OMAPI, so entries
> in dhcpd.leases look like this:
>
> host mac5039559852ceip100064048144 {
> dynamic;
> hardware ethernet 50:39:55:98:52:ce;
> fixed-address 100.64.48.144;
> }
>
> It seems V. 4.1.1-P1 wont reply to DHCPLEASEQUERY for fixed-addresses:
I suspect this is because there is no lease created for fixed-address hosts -
the server just bypasses all the lease logic and just offers the address. You
might want to try using reserved leases (set the "reserved" flag on a lease),
they go through the lease lifecycle - but just aren't allowed to be reallocated
to another host.
------------------------------
Message: 3
Date: Wed, 16 Mar 2016 10:09:27 +0000
From: Simon Hobson <[email protected]>
To: Users of ISC DHCP <[email protected]>
Subject: Re: dhcpd peer constantly requesting rebalancing
Message-ID: <[email protected]>
Content-Type: text/plain; charset=us-ascii
Brian De Wolf <[email protected]> wrote:
> Every other week or so we'll see them get stuck requesting rebalancing
> for a subnet every minute. This goes on for a day or two until it
> somehow resolves itself (I assume some leases expire).
How many free leases are there when this happens ?
------------------------------
Message: 4
Date: Wed, 16 Mar 2016 07:43:08 -0400
From: Jim Glassford <[email protected]>
To: [email protected]
Subject: Re: [Ext] Re: DHCP option host-name matching
Message-ID: <[email protected]>
Content-Type: text/plain; charset="windows-1252"; Format="flowed"
Don't overlook you will see names you would not use in front of your
mother, children or ever dreamed someone would use.
On 3/15/2016 9:00 PM, Bradford Dickerson wrote:
> Yes would miss that one. In our particular case though it is ok since
> we are just trying to roughly characterize the traffic and don't think
> most of our users change there iPhone name but could be wrong.
>
> Sent from my iPhone
>
> On Mar 15, 2016, at 5:07 PM, Jos? Queiroz <[email protected]
> <mailto:[email protected]>> wrote:
>
>> What if Stephan changes its iphone's name to "MadMakingMachine"?
>>
>>
>>
>> 2016-03-14 10:43 GMT-03:00 Bradford Dickerson <[email protected]
>> <mailto:[email protected]>>:
>>
>> Thanks Glenn! I didnt see that option when looking at man pages
>> first time through but now I do!. Thx, Brad
>> > On Mar 13, 2016, at 10:24 PM, Glenn Satchell
>> <[email protected] <mailto:[email protected]>>
>> wrote:
>> >
>> > Regex matching has been a part of the syntax for many years.
>> See dhcp-eval
>> > man page on your system.
>> >
>> > data-expression-1 ~= data-expression-2 data-expression-1 ~~
>> > data-expression-2
>> >
>> > The ~= and ~~ operators (not available on all systems)
>> > perform extended regex(7) matching of the values of two
>> > data expressions, returning true if data-expression-1
>> > matches against the regular expression evaluated by data-
>> > expression-2, or false if it does not match or encounters
>> > some error. If either the left-hand side or the right-
>> > hand side are null or empty strings, the result is also
>> > false. The ~~ operator differs from the ~= operator in
>> > that it is case-insensitive.
>> >
>> > So you'll want something like this, but it's not foolproof
>> either as the
>> > user could name the system anything they like.
>> >
>> > class "IPHONE_ACCORDING_TO_HOSTNAME" {
>> > match if option host-name ~= "iPhone";
>> > }
>> >
>> > regards,
>> > -glenn
>> >
>> > On Sat, March 12, 2016 9:06 am, Bradford Dickerson wrote:
>> >> Thanks Jose for pointer to list. I could use that to identify
>> Apple
>> >> clients. To narrow it down to various apple types such as
>> iphones, ipads
>> >> vs mac computers dont think it will help.
>> >>
>> >>> On Mar 11, 2016, at 4:44 PM, Jos?? Queiroz <[email protected]
>> <mailto:[email protected]>> wrote:
>> >>>
>> >>> Have you seen this?
>> >>>
>>
>> https://code.wireshark.org/review/gitweb?p=wireshark.git;a=blob_plain;f=manuf
>> >>>
>>
>> <https://code.wireshark.org/review/gitweb?p=wireshark.git;a=blob_plain;f=manuf>
>> >>>
>> >>> PS: Sorry the [possible] double posting, for some reason my
>> messages
>> >>> aren't being received by the list.
>> >>>
>> >>> 2016-03-11 18:09 GMT-03:00 Bradford Dickerson
>> <[email protected] <mailto:[email protected]>
>> >>> <mailto:[email protected] <mailto:[email protected]>>>:
>> >>> Hi Jose,
>> >>> Thanks for replying. Was looking into that but was
>> unsuccessful (
>> >>> searching on the web ) finding a list(range) of OUIs that
>> Apple used
>> >>> specifically for their iphones. Thx, Brad
>> >>>
>> >>>> On Mar 11, 2016, at 3:43 PM, Jos?? Queiroz
>> <[email protected] <mailto:[email protected]>
>> >>>> <mailto:[email protected] <mailto:[email protected]>>> wrote:
>> >>>>
>> >>>> Hi Bradford,
>> >>>>
>> >>>> It will be much easier if you use MAC Addresses to do that.
>> That way
>> >>>> you may use the MAC's OUI to determine the device's branding.
>> >>>>
>> >>>> 2016-03-11 17:35 GMT-03:00 Bradford Dickerson
>> <[email protected] <mailto:[email protected]>
>> >>>> <mailto:[email protected] <mailto:[email protected]>>>:
>> >>>> Hi,
>> >>>> At our company, we are trying to hand out IP ranges based
>> on the
>> >>>> characteristics of the client. For example using a class
>> declaration
>> >>>> as follows:
>> >>>>
>> >>>> class "IPHONE_ACCORDING_TO_HOSTNAME" {
>> >>>> match if substring(option host-name,0,6) = "iPhone";
>> >>>> }
>> >>>>
>> >>>> but I notice many iphones have names like ???Brad-iPhone??? or
>> >>>> ???TomIphone??? does not quite match above . Is there any
>> plan to
>> >>>> support regex type matches?
>> >>>>
>> >>>> Thx,
>> >>>> Brad
>> >>>> _______________________________________________
>> >>>> dhcp-users mailing list
>> >>>> [email protected] <mailto:[email protected]>
>> <mailto:[email protected] <mailto:[email protected]>>
>> >>>> https://lists.isc.org/mailman/listinfo/dhcp-users
>> >>>> <https://lists.isc.org/mailman/listinfo/dhcp-users>
>> >>>
>> >>>
>> >>
>> >> _______________________________________________
>> >> dhcp-users mailing list
>> >> [email protected] <mailto:[email protected]>
>> >> https://lists.isc.org/mailman/listinfo/dhcp-users
>> >
>> >
>> > _______________________________________________
>> > dhcp-users mailing list
>> > [email protected] <mailto:[email protected]>
>> > https://lists.isc.org/mailman/listinfo/dhcp-users
>>
>> _______________________________________________
>> dhcp-users mailing list
>> [email protected] <mailto:[email protected]>
>> https://lists.isc.org/mailman/listinfo/dhcp-users
>>
>>
>> _______________________________________________
>> dhcp-users mailing list
>> [email protected] <mailto:[email protected]>
>> https://lists.isc.org/mailman/listinfo/dhcp-users
>
>
> _______________________________________________
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> [email protected]
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